Date/Time Sat Diameter (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20130426T131025 tmi 56.7 0.0% 0.0 -0.0 n/a   35.0 kts
20130426T230329 tmi 145.7 0.0% 1.3 -1.3 n/a   35.0 kts
20130427T220716 tmi 5.0 34.2% 0.0 -0.0 n/a   35.0 kts
20130428T125812 tmi NaN 75.3% 0.0 -920.0 n/a   35.0 kts
20130429T120203 tmi 90.1 NaN% NaN NaN n/a   35.0 kts
20130429T215237 tmi 5.0 76.7% 0.0 -0.0 n/a   35.0 kts
20130430T071023 ssmis16 34.5 100.0% 17.7 -32.7 n/a   60.0 kts
20130430T080607 ssmis17 12.2 100.0% 12.1 27.1 >65 kts   60.0 kts
20130430T124348 tmi 12.2 100.0% 54.5 69.5 >85 kts# 60.0 kts
20130430T124402 tmi 12.2 100.0% 50.0 65.0 >85 kts# 60.0 kts
20130430T174822 ssmi15 5.0 50.7% 0.0 0.0 n/a   60.0 kts
20130430T194113 ssmis17 134.5 NaN% NaN NaN n/a   59.9 kts
20130430T205624 tmi 23.4 87.7% 1.6 16.6 n/a   59.6 kts
20130430T205628 tmi 5.0 89.0% 6.3 21.3 >65 kts   59.6 kts
20130430T221129 ssmis18 112.3 82.2% 0.0 0.0 n/a   59.2 kts
20130501T081728 ssmis17 112.3 0.0% 5.4 5.4 n/a   52.1 kts
20130501T104827 ssmis18 123.4 0.0% 5.6 -5.6 n/a   46.8 kts
20130501T114745 tmi 5.0 0.0% 0.0 -0.0 n/a   44.5 kts
20130501T114747 tmi 5.0 0.0% 0.1 -0.1 n/a   44.5 kts
20130501T173239 ssmi15 179.0 NaN% NaN NaN n/a   35.1 kts
20130501T194437 ssmis16 212.4 0.0% 0.9 -0.9 n/a   35.0 kts
20130501T213758 tmi 12.2 0.0% 4.8 -4.8 n/a   35.0 kts
20130501T215902 ssmis18 5.0 0.0% 3.0 -3.0 n/a   34.9 kts
20130502T060829 ssmi15 145.7 0.0% 0.0 -0.0 n/a   30.0 kts
20130502T082655 ssmis16 67.8 0.0% 3.8 -3.8 n/a   30.0 kts
20130502T095323 ssmis18 5.0 0.0% 0.3 -0.3 n/a   30.0 kts

Key:

Diameter values indicate the estimated surface eyewall diameter (the MI eyewall edge diameter minus 10 km).

Diameter values are red if Ring % <= 65, yellow/brown if Ring % <= 85 and green if Ring % > 85.

"Ring %" is the percentage of the "ring" (eyewall inner boundary) that is 1) colder than the "hot spot" (warmest eye pixel) in the eye by 20K, or 2) the percentage that is a) colder than 232K and b) colder than the "hot spot" by 10K, whichever is greater.

"Tb diff" is the difference between the "hot spot" (warmest eye pixel) and the warmest pixel on the eyewall.

Scores are listed as negative, and not used, when the JTWC or NHC estimated Vmax is <50 kts in order to rule out weak but highly symmetric TCs.

Error messages in intensity scores: -920 is used when the hottest pixel in the eye is <200K, to prevent false positives; -909 is a failure to process (bad input data).